What makes Reference Line Preeminence so good? - diyAudio
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Old 21st February 2014, 05:03 PM   #1
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Default What makes Reference Line Preeminence so good?

Hello everyone.. Any thoughts on what supposedly makes this preamp so much better than other passive preamp's? Isn't it just a stepattenuator? Why should a great piece of gear like Caddock Takman Volume control not be any bit as good?

Last edited by Chuck Norris; 22nd February 2014 at 06:35 PM.
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Old 26th February 2014, 10:11 AM   #2
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Is there really no one here who own's this preamp?
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Old 1st March 2014, 04:35 AM   #3
Calvin is offline Calvin  Germany
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Location: close to Basel

the difference between a 'good' passive and a 'less good' passive is due to its output impedance.
A lowish and constant output impedance is imho the most prominent requirement.
A simple voltage divider or Poti for example won't fulfill this requirement.
Of course the load impedance of the following device should be high and the complex part of the load impedance not too high, as a passive can't supply for high currents as a active stage could.
If done this way a passive can be as neutral, resolving and dynamic sounding as it possibly could get.
I did it that way in my Pre, just adding switchable-on-demand active stages to provide for some gain, the possibility to symmetrize and increased drive capability if required or wished for.
From the descriptions I assume that the Preeminence featured a attenuation network that also fulfilled the above mentioned requirements.

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